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irfanink
irfanink
New Member
April 13, 2017
Question

WAN Interface problem

  • April 13, 2017
  • 1 reply
  • 25611 views

I have new device and when i am configure wan interface and give my ISP is its give me error that this ip is already used by other device ( which is my modem ip ) . so please guide me what should i do . i have only one IP from ISP.

    1 reply

    rosario_thobias
    rosario_thobias
    New Member
    April 13, 2017
    Hi, Your ISP should give u what the wan public ip is, then the gateway ip of ur public ip, dns if u want etc. If you are not sure what's going on, I would suggest that you use your laptop and then set the static ip of ur laptop as the public ip, get the mask, and then set the gateway as the ip of ur modem ip. Typically ur modem would use the gateway ip. Now see if laptop can ping out. Then try the same on the firewall. The wan int of firewall would be ur public up. Then you need a route saying for eg: 0.0.0.0 0.0.0.0 <gateway ip as per isp modem>. This route will send all traffic to Internet.
    irfanink
    irfaninkAuthor
    New Member
    April 13, 2017

    my public ip is 182.180 50.174 and my private ip is 192.168.10.1 which is my default gateway 

    rosario_thobias
    rosario_thobias
    New Member
    April 13, 2017

    Only one of them is a public ip. It could be ur public ip or the gateway for ur public ip.

    So if your connection is a simple lan to wan connection, that is, if you don't do VPN then your ISP should give two public ip's stating here is your public ip and this is the default gateway for ur public ip.

     

    Is there a workstation where internet works? Is so, try googling what is ur public ip.

    Then do a tracert to 8.8.8.8 maybe and let me know.

     

    If your wan interface of the firewall is directly connected to the modem then,

    WAN interface of firewall 182.180 50.174<------->LAN interface of modem and typically that should be something like 182.180 50.173 for eg.

     

    i.e Your WAN ip of firewall and the modem should have ip in same subnets right. That's why I told u that ur isp should give 2 public ip.

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